Rolling-mill.



C. E. DUNCAN'.

ROLLING MILL.

APPLIoATIoN FILED ooT.15, 191s.

1,109,211. -v Patented 8811111914.

FIC-'1.2.

Q h WITNESSES F'IE 4- CHARLES E. DUNCAN, OF SAULT STE. MARIE, ONTARIO, CANADA.

.ROLLING-MILL.

Specification of Letters Patent.

Application 'led October 15, 1913. Serial No. 795,386.

Patented Sept. 1, 1914.

T all 'whom it may concern.'

Be it known that I, CHARLES E. DUNcAN, residing at Sault Ste. Marie, in the Provlnce of Ontario and Dominion of Canada, a citizen of the United States, have invented or discovered certain new and useful Improvements in Rolling-Mills, of which improvements the following is a specification.

It is the general practice especially in reducing large masses, such as ingots to rails,

etc., to keep the rolls cool by jets or streams of water directed onto the upper roll, so that it will flow down not only onto thev lower roll or rolls, but also onto-the metal passing between the rolls. AThe presence of water while necessary to prevent undue heating of the rolls, is objectlonable by reason of its chilling action on the metal, and also by reason of its flowing in between the highly an heated metal and the reducing surfaces of the rolls. When thus trapped the water is immediately converted into highly superheated steam of such pressure that it will.

blow out, It has been ascertained that by reason of its high temperature and pressure,

the steam in escaping exerts a cut-ting action on the surfaces with which it is in Contact and carries with it minute particles of metal. This cuttin action will not have any appreciable e ect on the metal bein rolled, but being constantly repeated on t e ycomparatively small reducing surfaces of the rolls, will cut holes or pockets in such surfaces, and portions of the metal being 'rolled will be forced thereintothus produc- 'tional elevation showing a pair of rolls hav? ing my improvement applied thereto; Fig. 2 is a top plan view showing a portion of a roll and my improvement in operative relation thereto; Fig. 3 is an end elevation of guides for the article into a pass and showlng my improved deflecting and wiping means mounted thereon, and Fig. 4 is a plan ,view of one of the wiping blocks.

While my improvement is shown in connection with rolls 1 shaped to produce rails, it will be understood that the contour of the reducing surface is not material, as my improvement can be readily adapted by the exercise of ordinary mechanical skill, to rolls yhaving any desired pass contour.

The usual or any suitableconstruction of side guides 2 are secured to the rest bar 3 by bolts 4 or other suitable means. A shield or plate 5 is removably attached to the guides 2 preferably by forming grooves 6 in the inner faces of the guides for the reception of the edges of the plate 6, which is held in proper position by pins 7. On this plate the front end of which may extend a short distance in between collars 8 of the upper roll, a block 9 is attached preferably by .a bolt 10 located near the outer ends of the plate and block so as tol permit the movement of the block. This block is preferably formed of wood or other material which will not have an abrading action on the roll surfaces, and has its front or inner end shaped to conform with a portion of the reducing surface o-f the pass. In the form shown the end of the block is shaped so as to project into the groove in the upper roll. As before statedv the rolls shown are constructed to form rails and the bottomrof the pass selected is adapted to operate on one side of the web flange land head of the rail. The end of the block is therefore provided with prongs a and b adapted to project into the grooves which shape the edges of the flange and head of the rail while the intermediate portion c of the block will bear against the portion of the pass which operates on the web of the rail. It is evident that the wear of the prongs and intermediate part of the block can be compensated for by adjusting the block or plate carrying the block inwardly.

iVliile the wiping of the side walls of the collars 8 may be effected by the edges of the block 9, itis preferred to employ spring actuated fingers 11 for that purpose. These fingers are pivotally mounted on the block." -9 and are yieldingly held in contact with the side Walls of the pass by suitably arranged spring 12.

It will beobserved that the entire surface of the portion of the pass in the upper roll is subjected to a wiping action by the block or block and fingers and these parts are so located as to remove' allexcept a very thin film of Water which is directed onto the roll by any suitable means as a series of nozzles 13.

If it should be found desirable to effect a more thorough removal of Water than is pos- `sible by the scraping action of the block or block and fingers, cotton Waste or other suitable material may be employed, it being held in position to bear against the surfaces of the pass by the lingers 11.

By the use of my improvement the Water is not only removed from the roll, but is also prevented from flowing onto the metal being rolled except at points distant from the bite of the rolls, that it Will be converted to steam before it can be trapped betWen the roll surfaces and metal. In addition to removing Water, my improvementv will also serve to remove scale, etc., from the roll surface. v

It has been found that by the use of my improvement the durability of the rolls is increased considerably more than fifty per cent. and the cost of maintenance of rolls per ton of metal rolled is decreased very materially.

` I claim herein as my invention:

l. In a r lling mill the combination of a pair of rol s, means for applying Water to said rolls and means operative on the reducing surfaces lfor preventing Water from being carried between the contacting surfaces of the roll and metal being reduced thereby.

2. In a rolling mill the combination of a pair of rolls, having reducing passes formed therein, means for applying Water to said rolls and non-abrading means bearing for the removal of Water from suchsurfaces prior to moving into contact With the metal being reduced.

3. In a rolling mill, the combination of a pair of rolls having reducing passes formed therein means for applying Water to said rolls, 'a block bearing against portions of such passes and spring actuated fingers bearing against other portions of the passes, whereby Water is removed from the reducing surfaces prior to contact With the metal being reduced.

4. In a rolling mill the combination of a pair of rolls having a passI formed therein, means for applying Water to said rolls, guides for directing metal into the pass, a plate removably mounted on the guides and a block carried by the plate and adapted to bear against the reducing surfaces of the ass. p 5. In a rolling mill the combination of a pair of rolls having a pass formed therein,

means for applying Water to said rolls, guides for directing metal into the pass, a plate removably mounted on the guides, a block carried by the plate and adapted to bear against the portions of the reducing surfaces of the pass, and spring actuated fingers mounted on the block and adapted to bear on other portions of the reducing surfaces of the pass.

In testimony whereof I have hereunto set my hand.

FRANK R. WARNER, j H. B. McMAHoN.

Copies of this patent may be obtained for ve cents each, by

addressing the Commissioner of Patents,

Washington, D. C. 

